Plant nutrient uptake

The process of element uptake by plants is complex and not totally understood. Some generally known points are:

• The process is not the same for all plants nor for all elements

• The complete process occurs within a healthy root system adequately supplied with carbohydrates and oxygen

• The essential elements must be in an available form in the root zone in balanced amounts

• Uptake varies from element to element and from crop to crop (see table 6-6)

• Soil conditions, such as temperature, moisture supply, soil reaction, soil air composition, and soil structure, affect the rate at which elements are taken up

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